Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	3966	617	16%	0.01	803	422	53%	7.2
10 Kinds of People	6835	1474	22%	0.01	1182	810	69%	5.2
2048	4544	2208	49%	0.00	2096	1790	85%	2.4
3D Printed Statues	3273	1614	49%	0.00	1511	1356	90%	2.0
3D Printer	312	53	17%	0.00	101	46	46%	8.7
3-Sided Dice	1363	97	7%	0.00	217	77	35%	8.7
4 thought	4285	1448	34%	0.00	1432	1199	84%	2.7
A1 Paper	2998	892	30%	0.00	869	679	78%	3.4
Aaah!	14236	6945	49%	0.00	6066	5638	93%	1.7
Abandoned Animal	697	128	18%	0.03	153	112	73%	4.7
ABC	4872	2293	47%	0.00	2199	1997	91%	1.6
Above Average	1947	861	44%	0.00	885	796	90%	2.0
A+B Problem	3927	375	10%	0.04	577	198	34%	8.2
A Brief Gerrymander	104	21	20%	0.15	22	13	59%	7.1
Abstract Art	171	41	24%	0.00	37	28	76%	5.8
Absurdistan Roads II	481	170	35%	0.00	162	109	67%	6.8
Absurdistan Roads III	1077	281	26%	0.02	270	195	72%	6.0
A Classy Problem	4853	1299	27%	0.01	1097	855	78%	4.1
ACM Contest Scoring	4029	2509	62%	0.00	2189	2073	95%	1.4
Adding Words	5094	1135	22%	0.00	1216	918	75%	3.9
A Different List Game	4705	324	7%	0.00	572	110	19%	9.1
A Different Problem	16879	6664	39%	0.00	6138	5330	87%	2.2
Adjoin the Networks	1193	326	27%	0.00	280	214	76%	6.0
Administrative Difficulties	562	122	22%	0.03	155	96	62%	6.6
Advanced Causal Measurements	24	7	29%	0.10	8	7	88%	5.5
Adventures in Moving -- Part IV	553	177	32%	0.00	165	141	85%	4.6
A Favourable Ending	894	186	21%	0.00	216	144	67%	5.2
A Feast For Cats	1018	368	36%	0.19	243	197	81%	4.9
Air Conditioned Minions	2467	680	28%	0.00	736	540	73%	4.5
Airline Hub	1296	222	17%	0.01	252	137	54%	7.0
Airport Coffee	612	133	22%	0.09	118	93	79%	6.5
Airport Construction	2476	332	13%	0.02	253	133	53%	7.2
Airport Logistics	45	10	22%	0.00	16	10	62%	7.7
Airports	197	66	34%	0.13	63	46	73%	6.0
Akcija	3336	1488	45%	0.01	1313	1156	88%	2.0
Aladin	673	58	9%	0.10	101	18	18%	8.9
Alchemy	84	10	12%	0.03	22	10	45%	8.5
Alea iacta est	24	11	46%	0.34	13	11	85%	5.9
Alice in the Digital World	1182	296	25%	0.01	313	238	76%	4.0
Alien Numbers	1377	701	51%	0.00	688	621	90%	2.0
A List Game	4934	1462	30%	0.00	1403	1167	83%	3.0
All about that base	1936	740	38%	0.00	787	655	83%	2.9
All Different Directions	661	298	45%	0.00	275	241	88%	2.6
Allergy Test	261	90	34%	0.00	76	43	57%	7.2
All Friends	598	107	18%	0.00	100	51	51%	9.1
All Just A Dream	1076	240	22%	0.05	176	126	72%	6.0
All Pairs Shortest Path	5383	919	17%	0.02	621	435	70%	4.9
Almost Perfect	3640	846	23%	0.00	908	710	78%	3.3
Almost Union-Find	3982	657	16%	0.02	630	332	53%	6.9
Alphabet	298	146	49%	0.00	156	130	83%	3.1
Alphabet Spam	4113	2666	65%	0.00	1979	1900	96%	1.4
Alternative Bracket Notation	188	78	41%	0.00	82	68	83%	5.6
Amalgamated Artichokes	2939	1329	45%	0.01	1175	1025	87%	2.4
Amanda Lounges	1073	292	27%	0.04	257	198	77%	5.7
A Mazing!	1153	287	25%	0.09	130	95	73%	5.7
Amazing Race	241	62	26%	0.39	69	49	71%	6.6
Ambiguous Result	130	41	32%	0.03	56	39	70%	6.7
Amsterdam Distance	742	276	37%	0.00	322	249	77%	2.9
A Multiplication Game	224	51	23%	0.00	69	48	70%	5.9
Anagram Counting	2000	777	39%	0.00	741	616	83%	2.9
Andrew the Ant	130	39	30%	0.06	51	35	69%	6.0
A New Alphabet	7045	3216	46%	0.00	3035	2819	93%	1.6
Animal Classification	1158	235	20%	0.03	218	135	62%	7.1
An Industrial Spy	1143	588	51%	0.02	447	382	85%	3.3
Another Brick in the Wall	1392	747	54%	0.00	732	666	91%	2.0
Another Candies	4842	1307	27%	0.00	1381	1128	82%	2.9
Another Dice Game	78	57	73%	0.00	49	46	94%	3.7
Another Query on Array Problem	890	112	13%	0.05	189	81	43%	7.5
Anthony and Cora	557	145	26%	0.00	175	117	67%	5.8
Anthony and Diablo	1234	424	34%	0.00	477	406	85%	2.5
Antiarithmetic?	761	118	16%	0.01	200	94	47%	7.9
Ants	1724	791	46%	0.00	584	511	88%	2.5
Apaxiaaaaaaaaaaaans!	6265	3943	63%	0.00	3569	3427	96%	1.3
Apparatus	550	134	24%	0.01	112	85	76%	5.2
Apple Market	414	80	19%	0.07	88	47	53%	8.3
Apples, Cherries, and Mangos	293	93	32%	0.02	86	68	79%	5.9
Aquarium Tank	298	90	30%	0.00	80	62	78%	4.5
Aqueduct Construction	111	36	32%	0.01	32	26	81%	7.0
A Question of Ingestion	495	113	23%	0.00	105	80	76%	5.7
Arable Area	221	48	22%	0.04	50	30	60%	7.8
A Rational Sequence	1040	332	32%	0.00	376	263	70%	5.2
A Rational Sequence 2	1120	811	72%	0.00	746	711	95%	1.6
A Rational Sequence (Take 3)	449	380	85%	0.00	274	265	97%	1.7
Arbitrage?	1577	303	19%	0.04	223	180	81%	3.3
Arcade!	1020	191	19%	0.01	173	128	74%	5.9
Arctic Network	1054	377	36%	0.00	314	249	79%	4.5
A Real Challenge	4019	1940	48%	0.00	1908	1775	93%	1.7
Area of Effect	79	9	11%	3.16	14	7	50%	8.0
Arithmetic	1333	382	29%	0.00	377	290	77%	3.8
Army Strength (Easy)	2131	1108	52%	0.00	980	882	90%	2.0
Army Strength (Hard)	2842	1454	51%	0.01	989	875	88%	2.4
Around and Around We Go	28	11	39%	0.00	16	10	62%	7.9
Around the track	15	4	27%	0.01	8	4	50%	8.1
Around the Track	258	33	13%	0.00	50	23	46%	8.0
Arranging Hat	194	81	42%	0.05	76	66	87%	5.2
Arranging Wine	106	22	21%	0.03	31	21	68%	6.5
Arriving on Time	152	53	35%	0.04	50	41	82%	5.0
Artur	261	60	23%	0.06	68	43	63%	6.5
Artwork	709	251	35%	0.06	232	149	64%	6.0
A Safe Bet	235	69	29%	0.15	67	49	73%	6.6